Annabel Keeler is an Affiliated Researcher at the Faculty of Asian and Middle Eastern Studies and a Research Associate of Wolfson College, both at the University of Cambridge. Her research interests include Sufi exegesis, early to 'classical' Islamic mysticism, Persian literature and prophetology. She is the author of Sufi Hermeneutics: the Qur'an Commentary of Rashīd al-Dīn Maybudī (London, 2006) and co-translator of the commentary of Sahl al-Tustarī, under the title, Tafsīr al-Tustarī (Kentucky, 2011). She is currently working on a monograph on the third/ninth century mystic Abū Yazīd al-Bisṭāmī and continuing her comparative study of Sufi commentaries on Sūrat Yūsuf.Sajjad Rizvi is Associate Professor of Islamic Intellectual History at the University of Exeter. Trained as a historian at Oxford and Cambridge, he has previously taught at the universities of Cambridge and Bristol. A specialist of Islamic thought in the Persianate East, he is the author of Mullā Ṣadrā Shīrāzī (Oxford, 2007) and Mullā Ṣadrā and Metaphysics (London, 2009), and is currently working on a study of the same thinker's noetics. His future projects include a comparative history of philosophy in the Persianate eighteenth century, and an intellectual history of Islamic philosophical traditions in India from 1500 to 1900.